#include <iostream>
#include <iomanip>
#include <cmath>
#include <conio.h> //for loading screen
#include <dos.h> //for loading screen
#include <windows.h> //for loading screen (sleep)
using namespace std;
struct customer // struct for customer details
{
    string name;
    string email;
    int number;
};

//function prototype
void welcomeScreen(); //display welcome screen and customer information
void getInfo(struct customer &cust); //get information from customer
void listHardware(); //list of names of hardwares for the type that has been chosen by the customer
double calcFunc(int,int,int,int,int,int,double,char); //to calculate price
void search_hardware(); //to search any hardwares available
void exit_system(); //to exit program
int admin_login(); //function accessible for admin/shopkeeper only

void welcomeScreen()
{
    struct customer cust; // struct declaration
    char ordermore = 'y';
    const int SIZE=5;

    system("cls");

    getInfo(cust); //function call to get info from customer

    while (ordermore == 'y' || ordermore == 'Y')
    {
        system("cls");

        cout << endl << "Type of hardwares that we sell:" << endl; //list of hardwares (1d Array)
        string item[SIZE]={"Monitor","CPU","RAM","Solid-State Drive","Graphic Card"};
        for(int i=0;i<SIZE;i++)
            cout << "\t" << i+1 << ". " << item[i] << endl;

        listHardware(); //function call list of names of hardwares

        cout << endl;
        cout << fixed << showpoint << setprecision (2);
        cout << "Name: "<< cust.name << endl; // struct output
        cout << "Email: "<< cust.email << endl;
        cout << "Phone Number: " << cust.number << endl;
        cout << setfill ('-') << setw (55) << "-" << endl;

        cout << "\nMore Order?(New Transaction) Press Y for yes: ";
        cin >> ordermore;
    }
}

void getInfo(struct customer &cust)
{
    cout << endl << "Enter name: "; // struct input
    //cin >> cust.name;
    getline(cin, cust.name);
    cout << "Enter email: ";
    cin >> cust.email;
    cin.ignore();
    cout << "Enter phone number: ";
    cin >> cust.number;
}

void listHardware()
{
    int i,j,type,m_type,c_type,r_type,s_type,g_type,quantity=0;
    const int SIZE=3;
    char shopmember,addorder = 'y';
    double total_price=0;
    const double discount=0.1;

    cout << endl;
    cout << "Membership (Y/N): ";
    cin >> shopmember;

    while(addorder=='Y' || addorder=='y')
    {
    cout << endl << "Select which type of hardware that you want to purchase: ";
    cin >> type;

    if(type==1)
    {
        const char *monitor[SIZE][2]=
        {
            {"BenQ PD3200U", "(RM3000)"},
            {"Acer Predator X34", "(RM4000)"},
            {"Dell UltraSharp UP3218K", "(RM8000)"}
        };

        cout << "Monitors:" << endl;
        for(i=0;i<SIZE;i++)
        {
            cout << "\t" << i+1 << ". ";
            for(j=0;j<2;j++)
            {
                cout << monitor[i][j] << " ";
            }
            cout << endl;
        }
        cout << endl << "Enter which Monitor you would like to purchase: ";
        cin >> m_type; //monitor
        cout << endl << "How many Monitor would you like to purchase?" << endl;
        cin >> quantity;
    }
    if(type==2)
    {
        const char *cpu[SIZE][2]=
        {
            {"AMD Ryzen 7 2700X", "(RM1200)"},
            {"Intel Core i5-8600K", "(RM1200)"},
            {"Intel Core i9-7980XE", "(RM8000)"}
        };

        cout << "CPU:" << endl;
        for(i=0;i<SIZE;i++)
        {
            cout << "\t" << i+1 << ". ";
            for(j=0;j<2;j++)
            {
                cout << cpu[i][j] << " ";
            }
            cout << endl;
        }
        cout << endl << "Enter which CPU would you like to purchase: ";
        cin >> c_type; //cpu
        cout << endl << "How many CPU would you like to purchase?" << endl;
        cin >> quantity;
    }
    if(type==3)
    {
        const char *ram[SIZE][2]=
        {
            {"Patriot Viper Elite 8GB DDR4-2400MHz", "(RM400)"},
            {"G.Skill Ripjaws V 16GB DDR4-2400MHz", "(RM1200)"},
            {"Corsair Dominator Platinum 32GB DDR4-3333MHz", "(RM2000)"}
        };

        cout << "RAM:" << endl;
        for(i=0;i<SIZE;i++)
        {
            cout << "\t" << i+1 << ". ";
            for(j=0;j<2;j++)
            {
                cout << ram[i][j] << " ";
            }
            cout << endl;
        }
        cout << endl << "Enter which RAM would you like to purchase: ";
        cin >> r_type; //ram
        cout << endl << "How many RAM would you like to purchase?" << endl;
        cin >> quantity;
    }
    if(type==4)
    {
        const char *ssd[SIZE][2]=
        {
            {"Samsung 860 Pro 1TB", "(RM1250)"},
            {"Crucial MX500 1TB", "(RM600)"},
            {"WD Blue 2TB", "(RM1600)"}
        };

        cout << "SSD:" << endl;
        for(i=0;i<SIZE;i++)
        {
            cout << "\t" << i+1 << ". ";
            for(j=0;j<2;j++)
            {
                cout << ssd[i][j] << " ";
            }
            cout << endl;
        }
        cout << endl << "Enter which SSD would you like to purchase: ";
        cin >> s_type; //ssd
        cout << endl << "How many SSD would you like to purchase?" << endl;
        cin >> quantity;
    }
    if(type==5)
    {
        const char *gcard[SIZE][2]=
        {
            {"Nvidia GeForce RTX 2080 Ti", "(RM4000)"},
            {"Nvidia GeForce GTX 1080 Ti", "(RM2900)"},
            {"AMD Radeon RX 580 8GB", "(RM2100)"}
        };

        cout << "Graphic Card:" << endl;
        for(i=0;i<SIZE;i++)
        {
            cout << "\t" << i+1 << ". ";
            for(j=0;j<2;j++)
            {
                cout << gcard[i][j] << " ";
            }
            cout << endl;
        }
        cout << endl << "Enter which Graphic Card would you like to purchase: ";
        cin >> g_type; //gpu
        cout << endl << "How many Graphic Card would you like to purchase?" << endl;
        cin >> quantity;
    }

    total_price=calcFunc(m_type,c_type,r_type,s_type,g_type,quantity,total_price,shopmember); //function call

    cout << setfill ('-') << setw (55) << "-" << endl;
    cout << "Total price for now (not including membership discount): RM" << total_price << endl;
    cout << setfill ('-') << setw (55) << "-" << endl;

    cout << "Do you want to purchase more? Press y for yes." << endl;
    cin >> addorder;
    }
    cout << setfill ('-') << setw (55) << "-" << endl;

    if (shopmember == 'y' || shopmember == 'Y')
        cout << "Total Price: RM" << total_price-(total_price*discount) << endl;
    else
        cout << "Total Price: RM" << total_price << endl;
    cout << setfill ('-') << setw (55) << "-" << endl;
}

double calcFunc(int m_type,int c_type,int r_type, int s_type, int g_type,int quantity,double total_price, char shopmember)
{
    double m_price=0,c_price=0,r_price=0,s_price=0,g_price=0;

    if(m_type==1) //monitor
    {
        m_price+=3000*quantity;
    }
    else if(m_type==2) //monitor
    {
        m_price+=4000*quantity;
    }
    else if(m_type==3) //monitor
    {
        m_price+=8000*quantity;
    }

    if(c_type==1) //cpu
    {
        c_price+=1200*quantity;
    }
    else if(c_type==2) //cpu
    {
        c_price+=1200*quantity;
    }
    else if(c_type==3) //cpu
    {
        c_price+=8000*quantity;
    }

    if(r_type==1) //ram
    {
        r_price+=400*quantity;
    }
    else if(r_type==2) //ram
    {
        r_price+=1200*quantity;
    }
    else if(r_type==3) //ram
    {
        r_price+=2000*quantity;
    }

    if(s_type==1) //ssd
    {
        s_price+=1250*quantity;
    }
    else if(s_type==2) //ssd
    {
        s_price+=600*quantity;
    }
    else if(s_type==3) //ssd
    {
        s_price+=1600*quantity;
    }

    if(g_type==1) //gpu
    {
        g_price+=4000*quantity;
    }
    else if(g_type==2) //gpu
    {
        g_price+=2900*quantity;
    }
    else if(g_type==3) //gpu
    {
        g_price+=2100*quantity;
    }

    cout << m_price << endl;
    cout << c_price << endl;
    cout << r_price << endl;
    cout << s_price << endl;
    cout << g_price << endl;

    total_price=m_price+c_price+r_price+s_price+g_price;
    return total_price;
}

void search_hardware()
{
    /*string hardware[2] = {"BENQ", "ACER PREDATOR X34"};
    char searchmore = 'y';

    system("cls");
    while (searchmore == 'y' || searchmore == 'Y')
    {

    cout << "Enter hardware to search: ";
    getline(cin,hardware[2]);

    int found=0;

    for (int j=0; j<2; j++)
    {
        if (strcmp(hardware[j], hardware)==0)
        {
            found=1;
            break;
        }
    }
    if (found==1)
    {
        cout << setfill ('-') << setw (30) << "-" << endl;
        cout << "The model is available" << endl;
        cout << setfill ('-') << setw (30) << "-" << endl;
    }
    else
    {
        cout << endl;
        cout << "Sorry, the model is not available";
    }

    cout << "\nSearch again? (Y/N): ";
    cin >> searchmore;
    }

    system ("cls");*/
}

void exit_system()
{
    cout << endl;
    cout << setfill ('-') << setw (55) << "-" << endl;
    cout << "\tHave a nice day!" << endl;
    cout << setfill ('-') << setw (55) << "-" << endl;
    cout << endl;
}

int admin_login()
{
    string userName;
    string password;
    int loginAttempt = 0;

    while (loginAttempt < 3)
    {
        cout << "Please enter username: ";
        cin >> userName;
        cout << "Please enter password: ";
        cin >> password;

        if (userName == "admin" && password == "eop123")
        {
            cout << "Welcome Admin!" << endl;
            break;
        }
        else
        {
            cout << "Invalid login attempt. Please try again.\n" << '\n';
            loginAttempt++;
        }
    }
    if (loginAttempt == 3)
    {
            cout << "Too many login attempts! The program will now terminate.";
            return 0;
    }
}

int main()
{
    char choice;

    //loading screen
    /*system("cls");
    for(int i=1;i<=50;i++)
    {
        system("cls");
        cout<<"\n\n\n\n\t\t\t\t   Loading "<<'\n'<<'\t'<<'\t';

        for(int j=1;j<=i;j++)
        cout<<"²";
        cout<<"\n\n\t "<<2*i<<"%";

        if(i>1 && i<20)
        cout<<"\n\n\tConnecting to server...";
        else if(i>20 && i<40)
        cout<<"\n\n\tChecking your browser...";
        else if(i>40 && i<48)
        cout<<"\n\n\tAccessing Cache...";
        else cout<<"\n\n\tComplete. Press Enter to Continue ";
        Sleep(10);
    }
    getch();
    system("cls");*/

    cout << endl;
    cout << setfill ('-') << setw (55) << "-" << endl;
    cout << "\tWelcome to IIUM Computer Hardware Shop" << endl;
    cout << setfill ('-') << setw (55) << "-" << endl;

    do
    {

    cout << "\nA - Search hardware availability" << endl;
    cout << "\nB - Buy PC hardware" << endl;
    cout << "\nC - Exit System" << endl;
    cout << "\nX - Shopkeeper/Admin Access" << endl;
    cout << "\nPlease enter your selection: ";
    cin >> choice;
    cin.ignore();

    choice = toupper(choice); // Transform to uppercase

    switch (choice)
    {
        case 'A': search_hardware();
        break;

        case 'B': welcomeScreen();
        break;

        case 'C': exit_system();
        break;

        case 'X': admin_login();
        break;

        default:  cout << endl;
                  cout << "====  Invalid entry. Please select  A, B, or C ====" << endl;
                  break;
    }
    }while (choice!= 'C');

    system ("pause");
    return 0;
}